8450643108 has 24 divisors (see below), whose sum is σ = 19722038112. Its totient is φ = 2816328064.

The previous prime is 8450643107. The next prime is 8450643133. The reversal of 8450643108 is 8013460548.

It is not an unprimeable number, because it can be changed into a prime (8450643107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2910 + ... + 130037.

It is an arithmetic number, because the mean of its divisors is an integer number (821751588).

Almost surely, 2^8450643108 is an apocalyptic number.

It is an amenable number.

8450643108 is an abundant number, since it is smaller than the sum of its proper divisors (11271395004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8450643108 is a wasteful number, since it uses less digits than its factorization.

8450643108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138251 (or 138249 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 8450643108 is about 91927.3795340648. The cubic root of 8450643108 is about 2036.8697272840.

The spelling of 8450643108 in words is "eight billion, four hundred fifty million, six hundred forty-three thousand, one hundred eight".